<template>
  <div class="border1">
    <h2>D 节点</h2>
    <slot></slot>
  </div>
</template>

<script>
export default {
  mounted() {
    console.log('D mounted')
  },
  updated() {
    console.log('D updated')
  },
  destroyed() {
    console.log('D destroyed')
  }
}
</script>
